WO2018008135A1 - Boîtier de batterie, cellule de batterie, module de batterie et procédé de fabrication de module de batterie - Google Patents

Boîtier de batterie, cellule de batterie, module de batterie et procédé de fabrication de module de batterie Download PDF

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Publication number
WO2018008135A1
WO2018008135A1 PCT/JP2016/070190 JP2016070190W WO2018008135A1 WO 2018008135 A1 WO2018008135 A1 WO 2018008135A1 JP 2016070190 W JP2016070190 W JP 2016070190W WO 2018008135 A1 WO2018008135 A1 WO 2018008135A1
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WO
WIPO (PCT)
Prior art keywords
battery cell
battery
holding plate
main surface
plate
Prior art date
Application number
PCT/JP2016/070190
Other languages
English (en)
Japanese (ja)
Inventor
健太郎 丸谷
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2016/070190 priority Critical patent/WO2018008135A1/fr
Priority to JP2018525901A priority patent/JP6537730B2/ja
Priority to US16/311,022 priority patent/US11108113B2/en
Priority to EP16908179.1A priority patent/EP3483946A4/fr
Publication of WO2018008135A1 publication Critical patent/WO2018008135A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0481—Compression means other than compression means for stacks of electrodes and separators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention relates to a method of manufacturing a battery case, a battery cell, a battery module, and a battery module using a holding plate.
  • a battery is used in which a battery pack is realized by storing and connecting battery cells in a battery case.
  • weight reduction has become an important issue depending on the required machine environment conditions.
  • Patent Document 1 discloses a battery modularization technology.
  • the battery cell is fixed by pressing it with a springy stainless steel holding plate against the expansion force of the highly charged cell.
  • Patent No. 3888283 gazette
  • the present inventors repeated various experiments to find conditions for securing vibration resistance, and as a result, the second main surface facing the entire battery cell main body, that is, the first main surface in contact with the chassis. It has been found that the pressing force with which the holding plate presses the battery body also has a distribution in the first main surface and in the second main surface even when the whole is covered with the holding plate.
  • the present invention has been made in view of the above, and an object thereof is to obtain a battery case which is lightweight, can securely fix a battery cell without depending on the magnitude of expansion force, and has high vibration resistance. I assume.
  • the present invention has been made to solve the problems described above and to achieve the object, and is a battery case that accommodates a battery cell having a first main surface and a second main surface opposite to the first main surface.
  • the battery case is characterized by comprising: a chassis that is in contact with the first main surface of the battery cell; and a holding plate that partially contacts the second main surface of the battery cell and presses the battery cell. I assume.
  • ADVANTAGE OF THE INVENTION According to this invention, it is lightweight and can fix a battery reliably, without depending on expansion force, and it is effective in the ability to obtain a battery case with high vibration resistance.
  • FIG. 16 is a perspective view showing a modification of the holding plate used in the battery case of the first embodiment.
  • FIG. 16 is a perspective view showing a holding plate of the battery module of the fourth embodiment. Flow chart showing manufacturing process of holding plate of embodiment 5
  • Embodiment 1 1 is a perspective view of the battery module of the first embodiment
  • FIG. 2 is a perspective view of a holding plate of the battery module of the first embodiment
  • FIG. 3 is a cross-sectional view of the battery module of the first embodiment.
  • 4 and 5 are cross-sectional views of the holding plate.
  • FIG. 6 is a diagram showing a pressure distribution on the second main surface of the battery in the battery module of Embodiment 1.
  • FIG. 7 is a partially broken perspective view showing the battery cell of the first embodiment.
  • FIG. 8 is a flowchart showing a manufacturing process of the battery module.
  • Battery module 1 of the first embodiment is a minimum structural unit of a battery pack configured by connecting a necessary number of lithium battery cells in series or in parallel, and faces first main surface 10A and first main surface 10A.
  • the battery cell 10 having an oblong cross section having a second main surface 10B is accommodated.
  • the battery case 40 according to the first embodiment partially abuts the chassis 20 in contact with the first main surface 10A of the battery cell 10 and the second main surface 10B of the battery cell 10, and presses the battery cell 10 And a holding plate 30.
  • the holding plate 30 is made of an aluminum alloy including JIS A7075, and includes a convex portion 33 having a thickness of about 5 mm as described later, and the edge 33E of the step portion 34 at both ends of the convex portion 33 It abuts on the battery cell 10.
  • the battery case 40 can accommodate two battery cells 10.
  • the battery cell 10 is fixed so as to be symmetrical with respect to the center plane 40Fc of the battery case. Therefore, when the battery cell 10 is fixed by the holding plate 30, the forces acting on the chassis 20 cancel each other, and deformation of the chassis 20 is minimized. I have to.
  • the holding plate 30 includes an outer surface 30A and an inner surface 30B in contact with the second main surface 10B of the battery cell 10, and on the inner surface 30B side
  • the convex part 33 which comprises the strip
  • holding plate 30 has a relief portion 31 configured to prevent contact between the second main surface 10B of battery cell 10 and the inner surface 30B of holding plate 30 without contact.
  • FIG. 4 shows the holding plate 30 before contact with the battery cell 10, ie, in the initial state
  • FIG. 5 shows the holding plate 30 in a state where the battery cell 10 is pressed.
  • the holding plate 30 has a convex portion 33 in a region facing the second main surface 10B of the battery cell 10, and has a relief 31 between the region facing the side surface 10C of the battery cell 10.
  • a stepped portion 34 is formed between the convex portion 33 and the relief portion 31.
  • the holding plate 30 may have at least one opening 32 for the purpose of weight reduction in the clearance 31 as shown in FIG.
  • the holding plate 30 is fixed to the chassis 20 via a shim 35 which is a adjusting plate. Due to the presence of the gap 70 formed between the relief portion 31 and the side surface 10C of the battery cell 10 by the relief portion 31 of the holding plate 30, the battery cell 10 is pressed without the holding plate 30 interfering with the battery cell 10. Be done. In order to realize the lightweight holding plate 30, it is desirable that the pressing force transmitted from the holding plate 30 to the battery cell 10 be constant regardless of the individual battery cells 10.
  • the battery cell thickness dimension between the first main surface 10A and the second main surface 10B of the battery cell 10 has variations within the range of manufacturing tolerance, and is necessary for changing the battery cell thickness dimension of the battery cell 10
  • the coefficient that determines the external force that is, the value corresponding to the spring coefficient of the battery cell 10 has variations.
  • the thickness of the shim 35 is adjusted for each battery cell 10 in order to make the pressing force necessary to fix the battery cell 10 constant.
  • the holding plate 30 has the shape shown in FIG. 4 before fixing the battery cell 10, but by fixing the battery cell 10, the holding plate 30 receives the repulsive force from the battery cell 10, and becomes the shape shown in FIG.
  • the amount of deformation of the outer surface 30 ⁇ / b> A of the holding plate 30 changes corresponding to the magnitude of the repulsive force from the battery cell 10.
  • the external can 11 be pressed from the outside to measure the pressure distribution, and based on the measured pressure distribution, the shape processing of the holding plate 30 be performed so as to cover the region where the pressing force is high.
  • the inventor pressed the outer can 11 from the outside with a flat plate, and measured the pressure distribution applied to the outer can 11 at the time of pressing. The measurement results are shown in FIG. Despite uniformly pressed with a flat plate, the pressure distribution is divided into regions P L to be the region P H and a low pressure a high pressure exists, the pressure distribution is lost even when changing the state of charge I discovered not to. To determine the shape of the holding plate 30 to measure the pressure distribution in the same manner, it is desirable that the inner surface 30B of the retaining plate 30 in the region P H to be a high pressure determines the shape so as to contact.
  • the battery cell 10 is connected to the outer can 11, the electrode structure 12 including the two electrode plates 12E 1 and 12E 2 in the outer can 11, and the electrode plates 12E 1 and 12E 2 , respectively.
  • the collector plate 13 and the terminal electrode 14 connected to the collector plate 13 are provided.
  • the electrode structure 12 is a wound body in which two electrode plates are wound via a separator 12S, and is immersed in an electrolyte (not shown) in the outer can 11. Then, the charge generated by the electrochemical reaction in the outer can 11 is configured to be extracted from the terminal electrode 14 through the current collector plate 13.
  • a battery cell is manufactured in step S10 of FIG.
  • the external can 11 is connected to the electrode structure 12 in which the two electrode plates 12E 1 and 12E 2 are wound in the external can 11 via the separator 12S, and the electrode plates 12E 1 and 12E 2 respectively.
  • a battery cell 10 having the current collecting plate 13 and the terminal electrode 14 connected to the current collecting plate 13 is formed.
  • an aluminum chassis 20 having a bottom plate 20Bo and side plates 20S provided on both sides of the bottom plate 20Bo is prepared.
  • the battery cell 10 is mounted on the chassis 20 by bringing the first main surface 10A of the battery cell 10 into contact with the bottom plate 20Bo of the chassis 20.
  • a mechanical characteristic measurement step S20 of measuring mechanical characteristics of the battery cell is performed. Since the battery cell 10 has variations in the battery cell thickness dimension and the value corresponding to the spring coefficient, the mechanical characteristics of each battery cell are measured using a measuring device.
  • shim thickness determination step S30 for determining the shim thickness, based on the values obtained in the mechanical characteristics measurement step S20 of the battery cell and the design values or actual values of the chassis 20 and the holding plate 30 The thickness of the shim 35 is determined.
  • step S40 of fixing the battery cell to the battery case which is the next step, the battery cell 10 is fixed together with the holding plate 30 to the chassis 20 through the shim 35 of the thickness determined in the shim thickness determination step S30.
  • the amount of deformation of the holding plate 30 is compared with the threshold previously determined in the determination step S60, which is the next step, to determine whether the measured value is within the predetermined range. If the measured value is larger than the predetermined range, the process returns to the step S30 of determining the shim thickness, and after the shim thickness is increased, the subsequent steps are performed again. If the measured value is smaller than the predetermined range, the process returns to the step S30 of determining the shim thickness, and after the shim thickness is reduced, the subsequent steps are performed again.
  • the battery module 1 is formed.
  • Battery module 1 obtained in the above manner, by a holding plate 30 that covered the entire of the battery cell 10, and into contact with the edge 33E only in a region having a high P H of the pressure distribution, 1/3 Even if the width of the holding plate 30 is large, it is possible to secure sufficient pressing force by the holding plate 30, and the weight reduction of the holding plate 30 is achieved.
  • holding plate 30 was formed with the aluminum alloy, you may use metals other than an aluminum alloy.
  • first main surface 10A having the largest area of battery cell 10 and chassis 20 abut on the entire surface, and in second main surface 10B, holding plate 30 and battery cell 10 Of the second main surface 10B of the
  • the pressure distribution in the contact surface between the battery cell 10 and the holding plate 30 is formed in advance by forming the holding plate 30 into a convex shape in consideration of the state of deformation after attachment. Can change.
  • the shape of the holding plate 30 it is possible to form a cavity or a recess in the middle part or to form a structure with only a beam, as long as the necessary portion of the battery cell 10 can be pressed. And can be suitably modified to reduce the weight.
  • the battery cell 10 having an oblong cross section is used, but the shape of the battery cell 10 can be appropriately changed to a cross sectional shape including a rectangular cross section or a circular cross section.
  • an elastic body having a convex portion 33 and having a restoring force inward is used as the holding plate 30.
  • the convex portion needs to be formed at the central portion.
  • a plurality of convex portions may be formed in the peripheral portion, and the shape is not limited.
  • FIG. 9 is a perspective view showing a modification of the holding plate 30 used in the battery case 40 of the first embodiment.
  • a contact portion with the battery cell 10 is two parallel linear regions on the second main surface 10B of the battery cell 10.
  • FIG pressure distribution of the battery cells 10 as shown in 6, the linear region of high pressure and a region P H 2 are parallel to correspond to constitute a linear protrusions 33S two parallel.
  • the contact portion between the holding plate 30 and the outer can 11 of the battery cell 10 is two parallel linear regions on the second main surface 10B of the battery cell 10, and the outer can 11 can be As it is held, it becomes possible to hold firmly and firmly.
  • the holding plate 30 forms two parallel linear protrusions 33 S on the second major surface 10 B of the battery cell 10 at the contact portion of the battery cell 10 with the outer can 11. In this case, more reliable holding is possible.
  • the relief portion 31 may not necessarily be formed, and the plate-like body itself constituting the holding plate 30 is directed in the direction of the battery cell 10 It is sufficient if it has resiliency.
  • FIG. 10 is a perspective view showing a battery module according to Embodiment 2 of the present invention
  • FIG. 11 is a perspective view of the battery module of Embodiment 2 as seen from the back side
  • FIG. 12 is Embodiment 2 of the present invention. It is cross-sectional explanatory drawing which shows the battery module which concerns on.
  • the battery module 2 of the second embodiment is the same as the battery module of the first embodiment except that the battery case 40 has a structure in which one battery cell 10 is accommodated.
  • the configuration is the same, but the rib-like reinforcing structure 20M shown in FIG. 11 is provided so that the force acting on the chassis 20 tends to deform the chassis 20 when the battery cell 10 is fixed by the holding plate 30. The deformation of the chassis 20 is suppressed.
  • the rib-like reinforcing structure 20M is arranged to prevent the increase of the mass of the chassis 20 while suppressing the deformation of the chassis 20.
  • An aluminum chassis 20 for housing the battery cells 10 has a bottom plate 20Bo and side plates 20S provided on both sides of the bottom plate 20Bo.
  • a reinforced structure portion 20M having irregularities for enhancing weight reduction and strength is formed.
  • the convex portion is selectively pressed by the slight unevenness appearing on the outer surface of the outer can 11. For this reason, it is desirable to press the package can 11 from the outside to measure the pressure distribution, and to shape the holding plate 30 so as to cover the region of high pressing force based on the measured pressure distribution. .
  • the force acting on chassis 20 when battery cell 10 is fixed by holding plate 30 by fixing the two battery cells symmetrically with respect to central surface 40Fc of the battery case.
  • Mutually offset, and the deformation of the chassis 20 could be minimized.
  • deformation may occur in the chassis 20, and it may be difficult to hold the battery cell 10 with a desired holding power. .
  • the battery module of the second embodiment even when only one battery cell 10 is fixed by the holding plate 30, deformation of the chassis 20 can be suppressed by the rib-like reinforcing structure portion 20M.
  • the battery cell 10 can be kept held.
  • the holding plate 30 is provided to cover the outer surface of the outer can 11 in a region corresponding to the end positions of the electrode plates 12E 1 and 12E 2 of the battery cell 10.
  • the holding plate 30 covers at least a part of the wound ends of the electrode plates 12E 1 and 12E 2 .
  • the holding plate 30 may be provided at a position corresponding to the convex portion of the battery cell 10. .
  • the holding plate 30 can be designed without measuring the pressure distribution on the second main surface of the battery cell 10 as shown in FIG.
  • FIG. 13 is an exploded perspective view showing a battery cell constituting the battery module of the third embodiment
  • FIG. 14 is a partially broken perspective view showing the battery cell of the third embodiment
  • FIG. It is a perspective view which shows the holding plate of a battery module.
  • FIG. 16 is a flowchart showing manufacturing steps of the holding plate.
  • the battery cell 10 is a battery of the third embodiment, the outer can 11, two electrode plate 12E 1, 12E 2 consisting of a positive electrode plate and negative electrode plate provided outer can 11, an electrode plate 12E 1, A collector plate 13 connected to 12E 2 and a terminal electrode (not shown) connected to the collector plate 13 are provided.
  • the outer can 11 has a convex portion 11T on the outer surface of the second main surface 11B among the first and second main surfaces 11A and 11B facing each other.
  • the convex portion 11T covers a region corresponding to the end position of the current collector plate 13 of the battery cell 10.
  • the battery cell 10 is a wound cell type in which two electrode plates 12E 1 and 12E 2 consisting of a positive electrode plate and a negative electrode plate are wound with a separator 12S interposed therebetween.
  • the convex portion 11T is a region pressed by high pressure when the holding plate 30S is pressed. Therefore, the battery cell 10 is reliably fixed to the chassis 20 of the battery case 40 by the convex portion 11T being selectively pressed by the convex portion 33T of the holding plate 30S.
  • the holding plate 30S has a convex portion 33T corresponding to the convex portion 11T of the outer can of the battery cell 10. Therefore, the holding plate 30S can securely fix the battery cell 10 to the chassis 20.
  • the holding plate 30S can not only firmly fix the battery cell 10, but also has an opening 32O larger in area than the battery module 1 of the first embodiment, and can achieve further weight reduction.
  • step S310 the first main surface 10A of the battery cell 10 is brought into contact with the chassis 20 and pressed from the second main surface 11B side of the outer can 11 by the inspection plate. , The pressure distribution on the test plate is measured.
  • the holding plate is designed in step S320 so as to have a shape for selectively pressing a region where the pressing force is higher than a predetermined value.
  • a holding plate is designed that includes a pressing unit that selectively presses a region where the pressing force is higher than a predetermined value. For the shape, also consider strength requirements.
  • step S330 the holding plate 30S shown in FIG. 15 is shaped based on the design data obtained by the above design. Then, the holding plate 30S is attached to the battery cell 10 fixed to the chassis 20.
  • FIG. 17 is an exploded perspective view showing a battery cell constituting the battery module of the fourth embodiment
  • FIG. 18 is a partially broken perspective view showing the battery cell of the fourth embodiment
  • FIG. It is a perspective view which shows the holding plate of a battery module.
  • the convex portion 11T is provided on the outer surface of the outer can 11
  • the battery cell 10S which is the battery of the fourth embodiment
  • the convex portion 11TU is formed on the inner surface of the outer can 11S. Differs in that they are provided.
  • the other parts are the same as those of the battery cell 10 of the third embodiment, and therefore the description thereof is omitted here. The same parts are given the same reference numerals.
  • the package can 11S has the convex portion 11TU on the inner surface of the second major surface 11B of the first and second major surfaces 11A and 11B facing each other.
  • the convex portion 11TU is a region where high pressure is applied when the holding plate 30T is pressed. Therefore, the convex portion 11TU is selectively pressed by the convex portion 33T of the holding plate 30, whereby the battery cell 10S is reliably fixed to the chassis 20 of the battery case 40.
  • the holding plate 30T has a convex portion 33T corresponding to the convex portion 11T of the package can of the battery cell 10S. Therefore, the holding plate 30T can securely fix the battery cell 10S to the chassis 20.
  • the holding plate 30T can not only firmly fix the battery cell 10S, but also has an opening 32OC having a larger area than the battery module of the third embodiment, and can achieve further weight reduction.
  • FIG. 20 is a flowchart showing the manufacturing process of the holding plate in the method of manufacturing the battery module of the fifth embodiment.
  • the fifth embodiment is characterized in that the holding plate is designed according to the pressure distribution of the battery cell.
  • the battery cell 10 is the same as that shown in the first embodiment, and the convex portion may not be formed on the outer can. Although illustration is abbreviate
  • step S510 the outer can 11 and the electrode structure 12 wound between the two electrode plates 12E 1 and 12E 2 provided in the outer can 11 via the separator 12S, and the electrode plates 12E 1 and 12E 2
  • a battery cell 10 is formed of a lithium battery having a current collector plate 13 connected to each and a terminal electrode 14 connected to the current collector plate 13.
  • step S520 an aluminum chassis 20 having a bottom plate 20Bo and side plates 20S provided on both sides of the bottom plate 20Bo is prepared. Then, the first main surface 10A of the battery cell 10 is in contact with the bottom plate 20Bo of the chassis 20, whereby the battery cell 10 is mounted on the chassis 20.
  • step S530 the battery cell 10 is pressed from the second main surface side of the package can 11 by the inspection plate (not shown), and the pressure distribution is measured.
  • step S540 the holding plate 30 is designed to cover the central portion of the outer can 11 with a large pressure distribution, and the holding plate 30 is shaped.
  • the holding plate 30 shaped and processed based on the design is mounted on the second main surface 10B of the battery cell 10.
  • a holding plate 30 is disposed on the second major surface 10 ⁇ / b> B of the battery cell 10 so as to partially cover the second major surface 10 ⁇ / b> B side of the battery cell 10. Then, in the measurement step S50, the gap 70 is formed above the center O between the first main surface 10A and the second main surface 10B of the battery cell 10 and between the battery cell 10 and the holding plate 30. Are fixed to the chassis 20.
  • the battery module 1 is formed. However, after the holding plate 30 is designed and shaped in step S540, the battery module 1 is assembled according to the flowchart shown in FIG. High quality battery module can be obtained.
  • the convex portion is formed to cover at least a part of the region corresponding to the end position of the electrode plate of the battery cell.
  • the convex portion is formed over the entire end portion of the electrode plate It may be done.
  • a convex part may be provided in area
  • the shape of the holding plate may be determined in consideration of the strength of the holding plate.
  • a convex portion may be formed on the outer surface or the inner surface of the battery cell outer can in accordance with the shape of the holding plate to positively form a region with a large pressing force. .
  • an electrode structure having a wound structure formed by winding an electrode plate was used, but an electrode structure having a laminated structure in which a positive electrode plate and a negative electrode plate are alternately stacked with a separator interposed is used. It goes without saying that it is good.
  • the electrode structure having a laminated structure it is desirable to use a holding plate that covers the periphery of the electrode plate, since a step is easily formed at the end of the electrode plate.
  • the configuration shown in the above embodiment shows an example of the contents of the present invention, and can be combined with another known technique, and one of the configurations is possible within the scope of the present invention. Parts can be omitted or changed.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

L'invention concerne un boîtier de batterie (40) qui loge une cellule de batterie (10)présentant une première surface principale et une seconde surface principale opposée à la première surface principale Le boîtier de batterie (40) comporte : un châssis (20) en contact avec la première surface principale de la cellule de batterie (10); et une plaque de maintien (30), qui est en contact avec une partie du second côté de surface principale de la cellule de batterie (10), et qui presse la cellule de batterie (10). Un module de batterie (1), qui est capable de fixer de manière fiable la cellule de batterie (10) sans dépendre d'une force d'expansion, et qui a un poids léger et une résistance aux vibrations élevée, peut être obtenu.
PCT/JP2016/070190 2016-07-07 2016-07-07 Boîtier de batterie, cellule de batterie, module de batterie et procédé de fabrication de module de batterie WO2018008135A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PCT/JP2016/070190 WO2018008135A1 (fr) 2016-07-07 2016-07-07 Boîtier de batterie, cellule de batterie, module de batterie et procédé de fabrication de module de batterie
JP2018525901A JP6537730B2 (ja) 2016-07-07 2016-07-07 バッテリーケース、電池セル、バッテリーモジュールおよびバッテリーモジュールの製造方法
US16/311,022 US11108113B2 (en) 2016-07-07 2016-07-07 Battery case, battery cell, battery module, and battery module manufacturing method
EP16908179.1A EP3483946A4 (fr) 2016-07-07 2016-07-07 Boîtier de batterie, cellule de batterie, module de batterie et procédé de fabrication de module de batterie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2016/070190 WO2018008135A1 (fr) 2016-07-07 2016-07-07 Boîtier de batterie, cellule de batterie, module de batterie et procédé de fabrication de module de batterie

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WO2018008135A1 true WO2018008135A1 (fr) 2018-01-11

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Country Link
US (1) US11108113B2 (fr)
EP (1) EP3483946A4 (fr)
JP (1) JP6537730B2 (fr)
WO (1) WO2018008135A1 (fr)

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WO2021065128A1 (fr) * 2019-09-30 2021-04-08 三洋電機株式会社 Procédé de production de batterie secondaire à électrolyte non aqueux, et batterie secondaire à électrolyte non aqueux
JP7360820B2 (ja) 2019-05-30 2023-10-13 日立造船株式会社 二次電池およびその製造方法

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CN207967118U (zh) * 2018-03-30 2018-10-12 宁德时代新能源科技股份有限公司 电池箱体以及电池箱

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JP7360820B2 (ja) 2019-05-30 2023-10-13 日立造船株式会社 二次電池およびその製造方法
WO2021065128A1 (fr) * 2019-09-30 2021-04-08 三洋電機株式会社 Procédé de production de batterie secondaire à électrolyte non aqueux, et batterie secondaire à électrolyte non aqueux

Also Published As

Publication number Publication date
EP3483946A1 (fr) 2019-05-15
JPWO2018008135A1 (ja) 2018-10-11
EP3483946A4 (fr) 2020-01-29
US20200028130A1 (en) 2020-01-23
JP6537730B2 (ja) 2019-07-03
US11108113B2 (en) 2021-08-31

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